US3038858A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ester based lubricant composition containing phenothiazine and aminopyridine
Assignee: Sinclair Refining Co
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Filing: 1959-06-16
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Granted: 1962-06-12
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Expires: 1979-06-16
Abstract
No abstract record available.
Inventors
- 👤 Guy M Verley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:41
CPC Classifications
C; C10; C10M; C10M169/00; C10M169/04; C10M105/00; C10M105/08; C10M105/32; C10M105/36; C10M105/38; C10M133/00; C10M133/02; C10M133/38; C10M133/40; C10M135/00; C10M135/32; C10M135/36; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/2825; C10M2207/283; C10M2207/2835; C10M2207/285; C10M2207/2855; C10M2207/286; C10M2207/30; C10M2207/302; C10M2207/304; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/102; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/11; C10M2209/111; C10M2209/112; C10M2211/00; C10M2211/04; C10M2211/044; C10M2211/06; C10M2215/00; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10M2219/00; C10M2219/10; C10M2219/104; C10M2219/106; C10M2219/108; C10N; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/12; C10N2040/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A LUBRICANT COMPOSITION CONSISTING ESSENTIALLY OF AN ESTER-BASED FLUID OF LUBRICATING VISCOSITY, ABOUT 0.01 TO 5% BY WEIGHT PHENOTHIAZINE AND ABOUT 0.01 TO 5% BY WEIGHT AMINOPYRIDINE AND EFFECTIVE TO RETARD OXIDATION OF SAID ESTER-BASED FLUID AT TEMPERATURES IN EXCESS OF 400*F., SAID ESTER-BASED FLUID BEING OF AN ESTER OF AN ALCOHOL OF 4 TO 12 CARBON ATOMS AND A CARBOXYLIC ACID OF 4 TO 12 CARBON ATOMS.
Claim 2
Dependent Claim
68 words
A LUBRICANT COMPOSITION CONSISTING ESSENTIALLY OF AN ESTER-BASED FLUID OF LUBRICATING VISCOSITY, ABOUT 0.01 TO 5% BY WEIGHT PHENOTHIAZINE AND ABOUT 0.01 TO 5% BY WEIGHT AMINOPYRIDINE AND EFFECTIVE TO RETARD OXIDATION OF SAID ESTER-BASED FLUID AT TEMPERATURES IN EXCESS OF 400*F., SAID ESTER-BASED FLUID BEING OF AN ESTER OF AN ALCOHOL OF 4 TO 12 CARBON ATOMS AND A CARBOXYLIC ACID OF 4 TO 12 CARBON ATOMS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-06-11 | 1965-12-11 | 1966-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-11 | 1969-12-11 | 1970-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-11 | 1973-12-11 | 1974-06-12 | $7700.00 | Window Closed / Lapsed |